In the Corticon vocabulary its very easy to see the associations between objects:

However it's much harder to see any inheritance hierarchies that may be present.

You either have to hover over every inherited attribute one by one to discover the parent objects,

 or open the vocabulary

It would be nice if hovering over the Object name in the vocabulary tab displayed the names of the inherited objects like this

Better still would be a view that shows the entire inheritance hierarchy.

For example: